glusterfs.git/xlators/mgmt/glusterd/src/glusterd-replace-brick.c, branch v3.5.3beta1

cli/glusterd: Changes to quota command Quota feature

2013-11-26T18:25:27+00:00

 re-work.

Following are the cli commands that are new/re-worked:
======================================================

volume quota  {enable|disable|list [ ...]|remove | default-soft-limit } |
volume quota  {limit-usage   []} |
volume quota  {alert-time|soft-timeout|hard-timeout} {}
volume status [all |  [nfs|shd||quotad]] [detail|clients|mem|inode|fd|callpool]
volume statedump  [nfs|quotad] [all|mem|iobuf|callpool|priv|fd|inode|history]

glusterd changes:
=================
* Quota limits are now set as extended attributes by glusterd from
  the aux mount created by the cli.
* The gfids of the directories on which quota limits are set
  for a given volume are stored in
  /var/lib/glusterd/vols//quota.conf file in binary format,
  and whose cksum and version is stored in
  /var/lib/glusterd/vols//quota.cksum.

Original-author: Krutika Dhananjay 
Original-author: Krishnan Parthasarathi 

BUG: 969461
Change-Id: If32bba36c67f9c2a30417af9c6389045b2b7c13b
Signed-off-by: Krutika Dhananjay 
Signed-off-by: Raghavendra G 
Reviewed-on: http://review.gluster.org/6003
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

bd_map: Remove bd_map xlator

2013-11-13T19:38:28+00:00

Remove bd_map xlator and CLI related changes.

Change-Id: If7086205df1907127c1a1fa4ba603f1c48421d09
BUG: 1028672
Signed-off-by: M. Mohan Kumar 
Reviewed-on: http://review.gluster.org/5747
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

glusterd/common-utils: move hostname helper functions to common-utils

2013-07-04T14:29:22+00:00

Change-Id: If47e209cb61ea0eb74ee2d6ef9e9342b2d6ee13a
BUG: 980838
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/5261
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

glusterd: big lock - a coarse-grained locking to prevent races

2013-04-12T20:47:46+00:00

There are primarily three lists that are part of glusterd process,
that are concurrently accessed. Namely, priv->volumes, priv->peers
and volinfo->bricks_list.

Big-lock approach
-----------------
WHAT IS IT?
Big lock is a coarse-grained lock which protects all three
lists, mentioned above, from racy access.

HOW DOES IT WORK?
At any given point in time, glusterd's thread(s) are in execution
_iff_ there is a preceding, inbound network event. Of course, the
sigwaiter thread and timer thread are exceptions.
A network event is an external trigger to glusterd, via the epoll
thread, in the form of POLLIN and POLLERR.
As long as we take the big-lock at all such entry points and yield
it when we are done, we are guaranteed that all the network events,
accessing the global lists, are serialised.

This amounts to holding the big lock at
- all the handlers of all the actors in glusterd. (POLLIN)
- all the cbks in glusterd. (POLLIN)
- rpc_notify (DISCONNECT event), if we access/modify
  one of the three lists. (POLLERR)

In the case of synctask'ized volume operations, we must remember that,
if we held the big lock for the entire duration of the handler,
we may block other non-synctask rpc actors from executing.
For eg, volume-start would block in PMAP SIGNIN, if done incorrectly.
To prevent this, we need to yield the big lock, when we yield the
synctask, and reacquire on waking up of the synctask.

Change-Id: Ib929f9905b55fb6c3fc27fefb497a26dba058e4f
BUG: 948686
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/4784
Reviewed-by: Jeff Darcy 
Tested-by: Gluster Build System

glusterd: changes in 'volume create' behaviour

2013-04-10T00:39:30+00:00

This patch incorporates all the changes suggested on the behaviour of
'volume create' command in http://review.gluster.org/#change,4214
(comment #14, to be precise).

Change-Id: Iaac524a59738b177415595b18aa8a136090d3d25
BUG: 948729
Signed-off-by: Krutika Dhananjay 
Reviewed-on: http://review.gluster.org/4740
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

glusterd: Removed fd leaks in glusterfs_start utility function

2013-03-25T21:50:53+00:00

PROBLEM:
    The FILE* associated with the pidfile was leaked if
    pmap_registry_search on the brickinfo' path failed.

FIX:
    Eliminates the use of the FILE* that was leaked. Uses
    glusterd_is_service_running utility function in place
    of the earlier attempt to check for the same.

Change-Id: I94082bd5a94b8a6340f8cc11726d3264e364efe6
BUG: 916549
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/4596
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy 
Reviewed-by: Anand Avati

glusterd: do dict unref after sending reply to cli

2013-02-03T20:35:09+00:00

This patch channelizes dict unrefs of dictionaries created from the cli
req during volume ops to one common function - glusterd_to_cli() - which
is guaranteed to be called irrespective of whether the command succeeds
or fails.

This patch also removes extra unrefs at a few places.

Change-Id: Ic8ba7166387b5dfd1f5ae860539e1b7093a94662
BUG: 861044
Signed-off-by: Krutika Dhananjay 
Reviewed-on: http://review.gluster.org/4003
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi 
Reviewed-by: Anand Avati

glusterfs : Moved option files, and statedumps from /tmp

2013-01-29T23:27:29+00:00

Change-Id: Ibdede396c4d6859225937316b7a59a661bcaf9f5
BUG: 764890
Signed-off-by: Avra Sengupta 
Reviewed-on: http://review.gluster.org/4422
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

glusterd: make 'glusterd_is_local_addr' return bool

2013-01-26T19:39:34+00:00

Change-Id: Id3bd0bfc4802c166f7a32b0cc6a726aeb5617b5d
BUG: 890618
Signed-off-by: JulesWang 
Reviewed-on: http://review.gluster.org/4427
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

glusterd: Don't persist enable-pump in volinfo->dict

2013-01-17T02:36:51+00:00

- enable-pump option in the pump xlator is set during a replace-brick
  session. This was persisted in the volinfo->dict for volume file
  generation.
  It has two 'harmful' side-effects,
  a) It would lead to volinfo cksum divergence among peers in
     cluster (for the same version no.) during a replace-brick session.

  b) "enable-pump" key would appear in "gluster volume info VOLNAME".
     This key is used internally in volume file generation code to
     optionally load the pump xlator in the source brick. It is _not_
     an volume option.

Change-Id: I37a8e7186e2985d187e4a166a599cf69145a90f9
BUG: 886000
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/4367
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati